计算物理 ›› 2010, Vol. 27 ›› Issue (1): 101-106.

• 研究论文 • 上一篇    下一篇

复杂媒质散射特性的FETI分析

盛亦军, 朱剑, 樊振宏, 陈如山   

  1. 南京理工大学, 江苏 南京 210094
  • 收稿日期:2008-08-18 修回日期:2009-05-04 出版日期:2010-01-25 发布日期:2010-01-25
  • 作者简介:盛亦军(1970-)男.江苏南京,博士生,从事复杂电磁问题的快速算法研究.
  • 基金资助:
    国家重点基础研究发展计划973计划(No.2009CB320201);国家自然科学基金(No.60701003);江苏省自然科学基金-创新学者攀登项目(No.BK2008048);中国博士后科学基金(20070411053)资助项目

Electromagnetic Scattering of Complex Medium by FETI

SHENG Yijun, ZHU Jian, FAN Zhenhong, CHEN Rushan   

  1. Nanjing University of Science And Technology, Nanjing 210094, China
  • Received:2008-08-18 Revised:2009-05-04 Online:2010-01-25 Published:2010-01-25

摘要: 在分析复杂媒质的电磁场散射特性时,引入有限元撕裂对接法,对包含复杂媒质在内的整个计算空间做区域分解,通过合理的代数运算,将一个三维问题转化为二维问题进行求解,减小计算的复杂度.使用Krylov求解器,避免在形成交界面系统方程时,系数矩阵中的求逆运算.两个算例结果表明有限元撕裂对接法在分析复杂媒质散射特性时的正确性和有效性.

关键词: 有限元撕裂对接法(FETI), 双各向同性媒质, 双各向异性媒质, 电磁散射

Abstract: Finite element tearing and interconnecting method(FETI) is used in analyzing electromagnetic scattering of complex medium.It decomposes computational space and complex medium.With reasonable operations of algebra,a 3D problem is changed to a 2D problem.It reduces computational complexity.By using Krylov solver,computation of reverse matrix is avoid in the equation about interface system.Numerical results show that the method is accurate and efficient for electromagnetic scattering of complex medium.

Key words: finite element tearing and interconnecting method (FETI), bi-isotropic medium, bi-anisotropic medium, electromagnetic scattering

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